./README.md in sinatra-param-1.1.0 vs ./README.md in sinatra-param-1.1.1

@@ -60,27 +60,37 @@
 - `in`, `within`, `range`
 - `min` / `max`
 
 ### Defaults and Transformations
 
-Passing a `default` option will provide a default value for a parameter if none is passed.
+Passing a `default` option will provide a default value for a parameter if none is passed.  A `default` can defined as either a default or as a `Proc`:
 
-Use the `transform` option to take even more of the business logic of parameter I/O out of your code. Anything that responds to `to_proc` (including Procs and symbols) will do.
+```ruby
+param :attribution, String, default: "©"
+param :year, Integer, default: lambda { Time.now.year }
+```
 
+Use the `transform` option to take even more of the business logic of parameter I/O out of your code. Anything that responds to `to_proc` (including `Proc` and symbols) will do.
+
+```ruby
+param :order, String, in: ["ASC", "DESC"], transform: :upcase, default: "ASC"
+param :offset, Integer, min: 0, transform: lambda {|n| n - (n % 10)}
+```
+
 ### Exceptions
 
 By default, when a parameter precondition fails, `Sinatra::Param` will `halt 400` with an error message:
 
 ```json
 {
+    "message": "Invalid parameter, order",
     "errors": {
         "order": "Param must be within [\"ASC\", \"DESC\"]"
-    },
-    "message": "Invalid parameter, order"
+    }
 }
 ```
 
-To change this, you can set `:raise_sinatra_param_exceptions` to `true`, and intercept `Sinatra::Param::InvalidParameterError` with a Sinatra `error do...end` block. _(To make this work in development, set `:show_exceptions` to `false`)_:
+To change this, you can set `:raise_sinatra_param_exceptions` to `true`, and intercept `Sinatra::Param::InvalidParameterError` with a Sinatra `error do...end` block. (To make this work in development, set `:show_exceptions` to `false`):
 
 ```ruby
 set :raise_sinatra_param_exceptions, true
 
 error Sinatra::Param::InvalidParameterError do